竹胶板夹板剪力墙抗侧力性能试验研究  

Experimental study on lateral performance of the midply-bamboo shear walls

作　　者：郑维[1,2] 周宇 周爱萍 董利[2] 陆伟东 王志强[2] ZHENG Wei;ZHOU Yu;ZHOU Aiping;DONG Li;LU Weidong;WANG Zhiqiang(National Engineering Research Center of Biomaterials,Nanjing Forestry University,Nanjing 210037,China;College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China;College of Civil Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京林业大学生物质材料国家地方联合工程研究中心,江苏南京210037 [2]南京林业大学材料科学与工程学院,江苏南京210037 [3]南京工业大学土木学院,江苏南京211816

出　　处：《中南大学学报（自然科学版）》2023年第1期305-313,共9页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51808293);江苏省自然科学基金资助项目(BK20180778)。

摘　　要：为探究竹胶板和自攻螺钉的搭配使用对夹板剪力墙抗侧力性能的提升效果,对9面竹胶板夹板剪力墙试件进行单调和低周往复加载试验,分析其破坏模式、抗剪刚度、抗剪强度、延性系数以及墙角抗拔紧固件的受力性能,并与采用木基结构板和普通圆钉制作的常规夹板剪力墙进行对比。研究结果表明:以竹胶板和自攻螺钉作为夹板剪力墙的中心夹板和钉连接件,能有效避免板边撕裂和钉子拔出破坏,并使墙体抗剪刚度提升11.2%~63.0%,使墙体抗剪强度提升51.2%~107.1%。增大螺钉间距会降低竹胶板夹板剪力墙的抗剪刚度和抗剪强度,但有助于提升其延性。所采用的新型抗拔紧固件有助于避免端部墙骨柱的拉弯断裂破坏,并能提供6.40~8.76 kN/mm的抗拔刚度。竹胶板夹板剪力墙适合内填于木框架结构中,可作为多高层框架木结构中的主要抗侧力构件。In order to investigate the improvement in the lateral performance of midply shear wall by using plybamboo panels and self-tapping screws, nine midply-bamboo shear wall specimens were tested under monotonic and cyclic loading. Their failure modes, shear stiffness, shear strength, ductile ratio and hold-downs’ behavior were evaluated and compared to those of the midply shear walls fabricated with wood-based structural panels and common nails. The results show that using plybamboo panel and self-tapping screw in midply shear walls can effectively avoid the failures of sheathing tearing and fastener’s withdrawal, and achieve 11.2%-63.0%and 51.2%-107.1% increase in shear stiffness and shear strength of the walls, respectively. Increasing screw spacing will reduce the shear stiffness and shear strength of the midply-bamboo shear walls, but contribute to enhancing their ductility. The new designed hold-down connector is beneficial to avoid the fracture of the end studs in midply shear walls, and can provide an uplift stiffness of 6.40-8.76 kN/mm. The midply-bamboo shear wall is quite suitable for being infilled in timber frame, and can be used as the primary lateral components in midrise timber frame structures.

关 键 词：夹板剪力墙 竹胶板 自攻螺钉 抗剪强度 抗拔紧固件 

分 类 号：TU366[建筑科学—结构工程]